1.2. If \( f(x)=\frac{\sqrt{x+2}}{3-3 x^{2}} \), for which values of \( x \) is 1:2.2 \( f(x) \) non real. \( 1.2 .3 \quad f(x) \) undefined \( 1.2 .4 f(x)>0 \) (2) (4) (4) 1.3 Simplify: \[ \frac{2^{x}-2^{-x}}{4^{x}-1} \] [24] QUESTION 2 2.1 Boitumelo invests an amount of 282800 for a period of 7 years. For the first two (3) years the interest was \( 12 \% \) p.a, compounded semi-annally. The interest was then changed to \( 10 \% \) p.a compounded quarterly. Determine the value of the mestment after the 7-year period. 2.2 Convert an interest rate of \( 10 \% \) p.a. compounded quarterly to an amual effective interest rate: 2.3 A lawnmower was traded in for R236 after 10 years. The depreciation was (3) calculited at \( 9,2 \% \) p.a. on a straight-line basis. Determine the cost of the lawnmower 10 years ago. (4)

Basit wants to took a loan for 5 years Which would be the least beneficial for him? \begin{tabular}{|l|l}\hline a) \( 11 \% \) simple interest & b) \( 8 \% \) compounded quarterly \\ \hline c) \( 10 \% \) compounded annually & d) \( 9 \% \) compounded semi annually \\ \hline\end{tabular}

If the fees earned by school in 10th year is 5 Million and fee is increased each year by \( 10 \% \) and number of students increase by \( 5 \% \). What was the fee earned by school in 1st year? \begin{tabular}{ll|l|l|l|}\hline a) Rs.3.07Million & b) 1.93 Million & c) 1.37 Million & d) 0.81 million \\ \hline\end{tabular}

83) Majid borrowed Rs. 600,000 at some simple interest x for 2 years and 3 months and paid 39,960 in excess, find interest rate? \begin{tabular}{|lll|l|}\hline a) \( 4.23 \% \) & b) \( 2.96 \% \) & c) \( 29.6 \% \) & d) \( 42.3 \% \) \\ \hline\end{tabular}

5) A person invested some amount today @ \( 1.8 \% \) per quarter for 10 years find his investment he receives Rs. 10 million. \begin{tabular}{|l|l|l|l|}\hline a) 8.356 million & b) 4.13 million & c) 4.899 million & d) None of these \\ \hline\end{tabular}

79) A person has enough amount to invest for 9 years, if Rs. 1 million is received after 9 years (end of year) at the rate of \( 7 \% \), What is amount he has to invest each year (at the start)? \begin{tabular}{|l|l|ll|}\hline a) Rs. \( \mathbf{8 3}, 486 \) & b) Rs. 78,025 & c) Rs. 543,933 & d) Rs. 613,497 \\ \hline\end{tabular} 80) If the fees earned bv school in 10 th vear is 5 Million and fee is increased each vear bv \( 10 \% \)